fix travis setting file

Author: y-yu

.travis.yml

@@ -22,7 +22,7 @@ install:
 before_script:
   - sudo fmtutil-sys --byfmt lualatex
   - cp trpl_meta.yml trpl-ebook/
-  - echo "pub const RELEASE_DATE: &'static str = \"`date +%F`\";" | cat - options.rs.template > options.rs
+  - "echo \"pub const RELEASE_DATE: &'static str = \\\"`date +%F`\\\";\" | cat - options.rs.template > options.rs"
   - cp options.rs trpl-ebook/src/convert_book/
   - rm -rf trpl-ebook/trpl
   - cp -r the-rust-programming-language-ja/1.9/ja/book trpl-ebook/trpl

options.rs renamed to options.rs.template

@@ -1,5 +1,3 @@
-
-
 pub const MARKDOWN: &'static str = "markdown+grid_tables+pipe_tables-simple_tables+raw_html+implicit_figures+footnotes+intraword_underscores+auto_identifiers-inline_code_attributes";
 
 pub const HTML: &'static str = "--smart --normalize --standalone --self-contained --highlight-style=tango --table-of-contents --section-divs --template=lib/template.html --css=lib/pandoc.css --to=html5";